Air compressor



FIG. 1 is a left side perspective view of an air compressor showing my new design in a first position;

FIG. 2 is a front view thereof;

FIG. 3 is a back view thereof;

FIG. 4 is a right side view thereof;

FIG. 5 is a left side view thereof;

FIG. 6 is a top view thereof;

FIG. 7 is a bottom view thereof; and,

FIG. 8 is a left side perspective view thereof showing my new design in a second position.

The broken lines in FIG. 7 are included for the purpose of illustrating portions of the air compressor that form no part of the claimed design. 

CLAIM The ornamental design for an air compressor, as shown and described. 